October 2008 has become Los Angeles' hottest in history. Because of the heat-trapping effects of urban development and global warming, L.A. has been getting progressively warmer. Entering this week, the average had been 84.3 and the National Weather Service was forecasting cooler days. But instead, it just got hotter: 94 degrees on Tuesday, 90 on Wednesday and 84 on Thursday. By 11:47 a.m. today, downtown had hit 81 degrees. It's almost November...I should be breaking out the scarf, not the bikini.